Charles a



(No Model.)

(LA. HUSSEY. POROUS CUP FOR GALVANIG BATTERIES.

No. 439,516.v Patented 0013.28, 1890.

M @f1/ign UNITED STATES PATENT OFFICE.

CHARLES A. HUSSEY, OF I\'E\V YORK, N. Y., ASSIGNOR TO THE CROSBY ELECTRIC COMPANY, OF SAME PLACE.

POROUS CUP FOR GALVANIC BATTERIES.

SPECIFICATION forming part of Letters Patent No. 439,516, dated October 28, 1890.

Application filed August 2 9,1 8 90.

.To all whom t may col/werm- Beit known that l, CHARLES A. ilUssEY, ot New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Galvani@ atteries; and I do hereby declare the following to be a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming part of this specification, and to the letters of reference marked thereon.

This invention relates more particularly to improvements in that class of primary batteries known as bluestone7 or gravity batteries; and it consists in the novel and im- 'proved form, construction, and arrangement of the porous cup or receptacle as employed in said batteries, all as hereinafter fully described, and pointed out in the claims.

In the drawings, Figure l is a longitudinal vertical section through the battery. Fig. 2 is a longitudinal vertical section showing one mode of applying a separate bottom or lower section of porous material to the body or upper section of non-porous material.

Similar letters of reference in the several figures indicate the same parts.

The letter A designates the jar or receptacle of any usual or approved form and construction; B, the positive or copper electrode immersed within the exciting-solution; C, the negative or zinc electrode, and D the porous cup partially immersed in the before-mentioned exciting-solution and containing the negative element C.

\Vith the exception of the cup I) the battery is of the usual well-known type of gravity-battery, and does not require more detailed description, as its construction and mode ofhoperation will be at once recognized by any one skilled in the art.

The cup or receptacle D is formed or provided with impervious or non-porous side walls and a porous lower section or bottom, and its upper end or mouth is contracted to form a relatively small opening for the insertion of the negative electrode, said opening being occupied by a stopper E, inserted therein, and provided with a passage Afor the neck (No model.)

of the electrode C or a conductor leading to said electrode.

By forming the cup with impervious sides or walls and a contracted mouth the evaporation or escape of the `fluid from within the cup can readily and conveniently be prevented by the insertion of the stopper E within the contracted mouth of the cup, said stopper also serving to support and sustain the zinc or other negative electrode in position, if necessary.

The cup may be formed in one piece of clay, and the side walls glazed to render them impervious to the fluids; or the cup may be constructed in two or more sections, the side walls bein g formed of anysuitableimpervious material-suoli as rubber, glass, ter-or provided with an impervious coating, while the bottom or lower section is made of porous material, and the two sections are united by an impervious joint. A cup of this kind is illustrated in Fig. 2, wherein the body portion of the cup is shown as provided with a ring-seat a to receive the disk or bottom of pervious material, the latter being retained in position and the joint closed to prevent the passage of fluids therethrough by the application of a suitable eeinenting material--such as plaster-oiparis--as shown at b. By thus forming the cup in sections the lower portion, that through which the fluid is caused to pass, can be reversed or changed when necessary or desirable without involving the loss or destruction ot the entire cup. Moreover, the requisite degree or quality of porosity can be secured at less expense and trouble when the section is made in disk lorm rather than as a component part of the cup,'l'or in thelat-ter case any imperfections occurring in either the pervious or impervious portions of the cup involve the rejection and consequent loss of both.

Having thus described my invention, what I claim as new is-' l. As a new article of manufacture, the hereinbefore-described improved porous cup for batteries, provided with impervious sides or body portion, a contracted neck or orifice, and a pervious bottom.

The combination, in a battery such as described and with the receptacle or jar and the electrodes, of a porous cup having impervious side Walls and a pervious bottom, the Walls being contracted at the top to form an orifice smaller than the body ot' the cup, with a stopper itted to said orifice, as and for the purpose specified.

3. The combination, in an electric battery such as described, and withl the receptacle containing the eXciting-solution,and an electrode, of the porous cup partially immersed iu said solution and containing the opposite electrode, said cup being formed with a oontracted upper end or mouth, impervious sides, and a pervious bottom, with a stopper closing the mouth of the cup and provided with an opening for the neck of the eleotrode,substau iially as and for the purpose Specified.

4. As a new article of manufacture, a por ous cup for electric batteries, composed of an impervious body and a pervious bottom, the two sections being united to form a receptacle for the electrode.

5. As a new article of manufacture, a sectional cup for electric batteries, the same comprising an impervious body provided with a seat and a porous bottom fitted to said seat and held in position by an impervious cement applied to the joint, substantiallyas described. 3o

CHARLES A. HUSSEY. Witnesses:

SUMNER C. CHANDLER, W. J. ANDERSON. 

